doc/api/core/operators/bufferwithtimeorcount.md
# This is RxJS v 4. [Find the latest version here](https://github.com/reactivex/rxjs)### `Rx.Observable.prototype.bufferWithTimeOrCount(timeSpan, count, [scheduler])`[Ⓢ](https://github.com/Reactive-Extensions/RxJS/blob/master/src/core/linq/observable/bufferwithtimeorcount.js "View in source") Projects each element of an observable sequence into a buffer that is completed when either it's full or a given amount of time has elapsed. #### Arguments1. `timeSpan` *(`Number`)*: Maximum time length of a buffer.2. `count` *(`Number`)*: Maximum element count of a buffer.3. `[scheduler=Rx.Scheduler.timeout]` *(`Scheduler`)*: Scheduler to run buffer timers on. If not specified, the timeout scheduler is used. #### Returns*(`Observable`)*: An observable sequence of buffers. #### Example```js/* Hitting the count buffer first */var source = Rx.Observable.interval(100) .bufferWithTimeOrCount(500, 3) .take(3); var subscription = source.subscribe( function (x) { console.log('Next: ' + x.toString()); }, function (err) { console.log('Error: ' + err); }, function () { console.log('Completed'); }); // => Next: 0,1,2// => Next: 3,4,5// => Next: 6,7,8// => Completed```### Location File:- [/src/core/linq/observable/bufferwithtimeorcount.js](https://github.com/Reactive-Extensions/RxJS/blob/master/src/core/linq/observable/bufferwithtimeorcount.js) Dist:- [`rx.all.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.all.js)- [`rx.all.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.all.compat.js)- [`rx.time.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.time.js) Prerequisites:- [`rx`](https://www.npmjs.org/package/rx).time.js - [`rx.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.js) | [`rx.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.compat.js)- [`rx.lite.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.js) | rx.lite.compat.js NPM Packages:- [`rx`](https://www.npmjs.org/package/rx) NuGet Packages:- [`RxJS-All`](http://www.nuget.org/packages/RxJS-All/)- [`RxJS-Time`](http://www.nuget.org/packages/RxJS-Time/)- [`RxJS-Lite`](http://www.nuget.org/packages/RxJS-Lite/) Unit Tests:- [`/tests/observable/bufferwithtimeorcount.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/tests/observable/bufferwithtimeorcount.js)